Campylobacter upsaliensis

**Semantic type:** Bacterium

**Definition:** A species of microaerophilic, Gram-negative, curved or spiral bacilli assigned to the phylum Proteobacteria. This species is motile using a single polar or bipolar flagellum, non-spore forming, oxidase positive, catalase negative, reduces nitrate, but not nitrite, and does not hydrolyze hippurate nor produce hydrogen sulfide. C. upsaliensis is a pathogen associated with gastroenteritis, acute watery diarrhea, septicemia, abscesses, inflammatory bowel disease, periodontitis and bacteremia in normal hosts and in those with opportunistic infections in immunocompromised individuals or HIV infected patients.

**Synonyms:** - CAMPYLOBACTER UPSALIENSIS